Papermaking machine



Sept. 2, 1941. H, L KUTTl-:Ry

PAPERMAKING MACHINE Filed Feb. 9, 1938 SheelzS-Shte'l'I l AITORN EY Sept.- 2, 1941. H. L. KUTTER PAPERMAKING MACHINE 2 sheets-shea 2 Filed Feb. 9, 1938 INVENTOR Patented Sept. 2, `1941 PAPERMAKING MACHINE Herman L. Kutter, Hamilton, Ohio, assignor to The Black-Clawson Company, Hamilton, Ohio, a corporation of Ohio l Application February 9, 1938, Serial No. 189,641

4 Claims.

This invention relates to paper` making machines of the Fourdrinier type.

One object of the invention is the provision of a Fourdrinier machine which is ofiy simple and lightweight construction and having a shaking table section supported by flexible hangers so arranged asrto provide for continued operation of the machine over long periods of time.

Another object of the invention is the provision of a Fourdrinier machine having a shaking table roll section in which the side rails are supported by symmetrically arranged spring hangers that act in tension in assuming the entire weight of the shaking parts.

Another object of the invention is the provision of a Fourdrinier machine having a forming table constructed in a few large sections and including table roll sections and a suction box section, each section being removable as a complete unit laterally from within the wire.

Another object of the invention is the provision of a Fourdrinier machine having a shaking table roll section including side rails which are supported at a number of spaced points fby means of symmetrically arranged pairs of supporting hangers which operate in tension and which are provided on a laterally removablev structure so that the entire section may be laterally removed from within the wire.

Another object of the invention is the provision of a Fourdrinier machine having a nonshaking table roll section adjacent the breast roll, and havinga subsequent table roll section which is vibrated laterally and which extends down to the suction box section.

Other objects and advantages of the invention will be apparent from the following description, the appendedclaims and the accompanying drawings, in which Fig. 1 is a side elevation of a Fourdrinier machine constructed in accordance with the present invention;

Fig. 2 is a. side elevation of the breast roll end of the machine, shown on an enlarged scale;

Fig. 3 is a fragmentary plan view of the shake mechanism;

Fig. 4 is a vertical section on the line 4-4 of Fig. 1; and

Fig. 5 is an end view of one of the breast roll supports.

Referring more particularly to the drawings by reference numerals, the inventiony is herein shown as illustrated in connection with a Fourdrinier machine having a breast'roll l0, a headl box portion I I, forming wire I2, turning roll or couch roll I3, and a forming table over which the forming wire moves in traveling from the breast roll to the couch'roll. In its return movement from the roll I3 the wire travels over` lower rolls I6 and Il, hand controlled guide roll I8, and under tensioning roll I9, and over a guide roll 20, these rolls being arranged below the forming table.

The forming table comprises table roll sections and a suction box section, each section being adapted to be removed as a unit in a lateral direction from within the wire. One of the table roll sections is alsoadapted for lateral vibratory movement, the breast roll being also supported for vibratory movement in order to impart a vibration to the wire.

The table roll section 22 which isprovided initially adjacent the breast roll comprises side rails 23 one adjacent each Aside of the machine. The sidel rails :may be interconnected at the ends thereof by transversely extending frame members 24 connecting their downwardly extending end portions, and each side rail carries a pair of rotatable carrying rollers 25. There are four of these rollers 25 one adjacent each corner of the table roll section, resting upon transversely extending carrying tubes or tracks 28v which are mounted on supporting brackets 29 provided at opposite sides of the machine on supporting side standards 38 and 3| as shown in Fig. 1. These brackets 29 are adapted for vertical adjustment on the supporting pedestals 38 and 3|, and can be properly set in position by means of the,

threaded locating screws 33. 'I'he tubular tracks 28 extend from one side of the machine to the other and support the section 22 so that the latter is capable of being rolled out laterally from within the wire upon extension tracks which may be arranged at one side of the machine to form removable continuations of the tracks 28, supported on the brackets 29 and 38 and upon additional standards at one side of the machinein the manner more fully set forth in the prior patent to H. L. Kutter No. 1,988,247.

The side rails 23 also carry a save-al1 trough I34 which extends transversely below the upper .run of the-wire, and is removable laterally with opposite side rails and outwardly oi' the path of travel of the wire. The bottom of trough 34 slides over the upper ends of the receiving tanks 34' when the section 22 is laterally removed.

The subsequent table roll section 35 is preferably considerably longer than the initial section 22, and extends down to the suction boxes.

This section 35 is adapted for lateral removal from within the wire in the same manner as the section 22. but the section 35 is also adapted for vibratory movement to impart a vibratory motion to the wire as the latter passes over the suction boxes, and preventing grooving or tracking of the suction box surfaces over which the wire passes.

The table roll section 35 comprises `laterally spaced shaking side rails 31 which are preferably grooved as indicated at 38 in Fig. 4 to receive the feet of table roll bearing members 39. The latter are preferably4 provided with non-cylindrical seats 40 intertting the transversely curved ends of the table rolls 4I. Vibratory movements imparted to one side rail will thus be transmitted through the rolls themselves to the side rail at the opposite side of the machine.

Each side rail 31 is a rigid member, preferably a metal casting, extending throughout the complete length of the shaking table roll section 35. At spaced points along its length it is -provided with downwardly extending bracket projections 43, these projections beingy arranged in pairs and projecting downwardly from opposite sides of each side rail 31 as shown in Fig. 4. The lower ends' of these projections 43 are ilxed to the lower ends of ilexible hangers 45 which extend down',l wardly from-the upper ends of a rail supporting member 41, it being understood that there is a rail supporting member 41 at each side of the machine arranged closely adjacent its respective side rail and preferably substantially centrally below the same as shown in Fig. 4. And, as will be apparent from that figure, the rail supporting members 41 are each connected symmetrically at opposite sides thereof to a pair of flexible hangers 45 provided at each supporting location. As shown in Fig. 1 there are four points of support longitudinally spaced along each side rail 31.

The exible supporting hangers 45 are always in tension, and as they are not required to assume any strut or compression load they may be made quite thin. Steel or copper alloy plates or blades, or Micarta or Bakelite blades may be used, and as these blades or plates may be made with a thickness of only a small fraction of an inch there is substantially no biasing tendency in the supporting blades themselves which must be overcome by the vibrating mechanism. 'I'he blades are not suiliciently thick to create a large internal ber stress such as would result in breakage, and with a thin construction of blade, operating in tension, the blade may have a comparatively large factor of safetyand be capable of operating over very long periods of time. With the spring construction arranged as above described, it will also be apparent that the supporting members on which the side rails are carried may be quite long, but the total'verticalheight of the side rails and their supporting members, taken together, is comparatively small. The rail supporting members 41 are preferably made as hollow box beams the lower side 49 of which is inclined downwardly from the ends of the table roll section towards the middle thereof as shown inFig. 1.

tubes or tracks 52 that are carried by vertically adjustable' brackets 54 and 53 which are mounted on the supporting pedestals 55 and 3|. 'Ihe tracks 52 support the rail supporting members 41 so that the entire table roll section 35 may be laterally removed from WithinA the wire and rolled out onto extension tracks arranged in .alignment with the tracks 52.

It is preferred that the upper run of the wire from the breast roll to the suction boxes should kextend approximately horizontally, and to provide this horizontal travel, or permit adjustment of the initial inclination of the wire from the breast roll to the near end of the shaking table roll section, the vsupporting bracket 53 and the adjacent bracket29 may be raised or loweredI and the non-shaking rails or rail carrying members may be held in any adjusted position by means of suitable locking or locating means such as the lock nut 58 shown in Fig. 2 which is threaded on` a stud 59 projecting through a vertical slot 60 in the end portion of the side supporting member 41. The stud 59 is arranged in fixed location on the supporting pedestal 3l. Similar adjusting andholding means may be provided adjacent the front and rear of each of 'the table sections at the side of the machine toward which the sections can be removed.

The shaking table roll section is also provided with a save-all trough 62,carried by the lower sides of the rail supporting members 41 and laterally removable therewith. The ends of the trough 52 are provided -with openings in the trough bottom so that the white water empties into stationary tanks or conduits 62 provided in xed position below the rail supporting members.

Adjacent the tensioning roll i9 and above the same, the rail supporting members" are each provided with a bracket 53 forming hook shaped sockets adapted to receive the ends of roll I9 as indicated in dash lines 54 in Fig. 2, The roll I9 may thus be removed from its bearings and taken from its normal position and hung on the railsupporting members 41 before the table roll section is laterally removed from within the wire. 'I'he roll I9 may thus be taken away with the table roll section.l

The breast roll I 0, at each end thereof, is rotatably joumalled in bearings 65 which are so supported as to be capable of lateral movement in the direction of the breast roll axis. The pull of the wire tending to move the breast roll transversely to its axis is assumed by flexible spring blades 65 which project toward and connect to the breast roll bearingsvfrom the two laterally spaced supporting pedestals 61, it being understood that this construction is the same at both sides ot the breast roll These spring blades 56 operate in tension and hold the bearings for the breast roll in such a way as to permit free vibra tion in the direction of the roll axis.

'I'he breast roll is supported by flexible spring members arranged at each end of the roll which operate in tension and which are arranged generally similar to the construction provided for the spring support of the shaking table rolls. As shown in Fig. 5, the bearing 55 has rigid downwardly extending arms or projections 6I symmetrically provided at opposite sides of the supporting pedestal 61. ',Ihe lower end of these arms 68 are securely attached to the two laterally l spaced spring blades 1li, theupper ends of which close to and below the bearing 65. It will thus be seen that the spring blades 1U are symmetrically provided so as to operate in tension at opposite sides of the supporting pedestal from which they depend, the blades being enclosed within the downwardly extending arms 68 and providing for free vibrational movements ofl the breast roll in a construction in which the blades may operate over very long periods of time without breakage.

'Ihe bearing 65 at one end of the breast roll is given a vibratory movement, the vibrating mechanism being illustrated in Fig. 3. This vibratory movement is imparted by means of a connecting rod 13 driven from an eccentric` 14 on a rotatable shaft 16. The biiurcated driven end of the rod 13 is clamped around rubber sleeves 13 which tightly surround the ends of a pin 14" extending through and xed in the end of a bracket 14' xed to and projecting Cil from the breast roll bearing, as shown in Figs.-

3 and 5. The rubber sleeves may yield. without relative sliding movement of the pin 14" on the rubber and permit the angular movement of the rod 13 without noise or lost motion.

The shaft 16 may be driven from a suitable drive belt 11 or the like. On the shaft 16 are additional eccentrics 19 and 80 which operate rods 82 and 93 respectively, th latter being connected by means of flexible iiat springs 84 to suitable points on the adjacent side rail 31 opposite the points 85 and 86 which appear on Fig. 1. The breast roll and the shaking table roll section'may thus be vibrated at a suitable speed and through a suitable amplitude, the construction preferably being such that the speed of rota'- tion of the shaft 16 can be controlled and such that the degree of eccentricity of the various eccentrics may be relatively adjusted to give a greater movement to the wire carrying mechanism at one point than at another.

Immediately following the shaking table roll section 35 is the non-shaking suction box section 90. I'his section comprises side rails 9| one on each side of 4the machine, the ends of which support the rotatable rollers 92 which can be rolled along the tracks 93. These tracks are similar to the tracks on which the removable sections of the table roll sections are mounted, the tracks 93 vbeing carried by vertically adjustable supporting brackets 94 which are located in any desired position of adjustment by means of set screws 95 on the supporting standards 96 and 55. (See Fig. 1.) The side rails 9| of the suction box section carry a series of suction boxes 98 over which the wire |2 passes as it travels to the guide roll I3. These suction boxes or parts thereof need not be taken from the side rails 9| when the Fourdrinier wire is being removed or replaced, as all of the suction boxes together with the supporting rails 9| are adapted for lateral removal as one complete unit independently of from within the wire in a few complete units, each unit beingof suicient size so that it may be readily handled and each unit being independently removable so that it is unnecessary to fasten a number of units together or to detach a number of units one from the other in removing and replacing the Fourdrinier wire.

While the vform of apparatus herein described constitutes a preferred embodiment of the invention it is to be understood that thel invention is not limited to this precise form of apparatus, and that changes may be made therein without departing from the scope of the invention which is `deiined in the appended claims.

What is claimed is:

1. In a Fourdrinier machine having a breast roll and a forming wire, a table section having a series' of table rolls over which the wire travels, said section comprising a pair of spaced side rails supporting opposite ends of the table rolls each side rail having downwardly extending bracket projections arranged in pairs, exible hangers arranged in pairs between said projections and secured at their lower ends to said bracket projections, and substantially horizontal stationary rail supporting beams one provided centrally below and adjacent each of the side rails between the bracket projections and each beam symmetrically connected at opposite sides thereof to the upper ends of a pair of said exible hangers, and means for laterally vibrating said side rails.

2. In a Fourdrinier machine having a breast roll and a forming wire, a-table section having a.

series of table rolls over which the wire travels.

said section comprising a pair of spaced side rails supporting opposite ends of the table rolls each side rail having pairs f downwardly extending bracket projections, ex-ible hangers arranged in spaced pairs between each pair of bracket projections and secured at their lower ends to said ,bracket projections, and stationary rail supporting members one provided substantially centrally below and closely adjacent each side rail and symmetrically connected at opposite sides thereof to the upper ends of a pair of said hangers.

3. A Fourdrinier machine of the character described comprising a breast roll, means for shaking the breast roll, a /sectional forming table eX- tending outwardly from the breast roll, said table having lan initial section having stationary side rails and table rolls rotatably supported thereon, a subsequent table roll section having roll supporting rails, carrying means for said roll supporting rails, Spring means supporting said roll carrying rails from said carrying means for lateral vibratory movement and providing for substantial lateral vibratory movement ofthe terminal end thereof most remote from the initial section, means for laterally vibrating said 'roll supporting rails throughout their length, and a stationary suction box section immediately following a laterally vibratory end of said subsequent table roll section and having a series of suction boxes.

4. A Fourdrinier machine of the character described having' a breast roll, means for shaking the breastroll, a forming wire and'a forming table over which the wire travels, said forming table comprising a plurality of table roll` sections each rotatably supporting a series of table rolls, the initial section adjacent the breast roll being of shorter length than the second section and having non-shaking side rails and the second section being longer than the initial section and vide lateral vibratory movement thereof throughout their entire length, and 'a stationary suction box section immediately following said shaking side rails and having a', series of suction boxes 5 arranged below the wire.

HERMAN L. KUTTER 

